499820 has 24 divisors (see below), whose sum is σ = 1068144. Its totient is φ = 196416.

The previous prime is 499819. The next prime is 499853. The reversal of 499820 is 28994.

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1154 + ... + 1526.

It is an arithmetic number, because the mean of its divisors is an integer number (44506).

2⁴⁹⁹⁸²⁰ is an apocalyptic number.

It is an amenable number.

499820 is an abundant number, since it is smaller than the sum of its proper divisors (568324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

499820 is a wasteful number, since it uses less digits than its factorization.

499820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 499820 is about 706.9794905087. The cubic root of 499820 is about 79.3605270489.

The spelling of 499820 in words is "four hundred ninety-nine thousand, eight hundred twenty".